Straw cup attachment



FIG. 1 is a front perspective view of a straw cup attachment with an opened cap, according to our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a left side view thereof; and

FIG. 8 is a right side view thereof.

FIG. 9 is a right front perspective view of the straw cup attachment with a closed cap, according to our new design;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof;

FIG. 12 is a rear view thereof;

FIG. 13 is a rear perspective view thereof;

FIG. 14 is a front view thereof;

FIG. 15 is a right side view thereof; and

FIG. 16 is a left side view thereof.

FIG. 17 is an enlarged view of area 17 in FIG. 1 ; and,

FIG. 18 is an enlarged view of area 18 in FIG. 1 .

The dash-dash broken lines in the drawings depict portions of the straw cup attachment that form no part of the claimed design. 

CLAIM The ornamental design for a straw cup attachment, as shown and described. 